We purchased a Reckmann for Esmeralde when we bought her in 2005. I was lured by the shine and the fact that it was made in Germany...
About 6 years later, on the starting line of a race in Maine the swivel "unscrewed" itself and fell apart dropping the Genoa to the deck(mostly) As I looked at the design more carefully, I realized that there was not much beyond a simple friction clip to prevent this from happening...
Luckily for us, a local boatyard kept the swivel bearings in stock (hint, hint) and we were back racing the next day.
When we had a chance, I called the distributor of the furler and asked why it was designed with such an easy to defeat lock and questioned if they had seen the failure before. They denied ever hearing of a case!

Having lived through the failure once, I decided that one time was too many and we replaced the furler with a Harken furler.
I no longer worry about the swivel unscrewing itself (big circlips hold the swivel together) and the jib furles more easily now, much, much more easily...

A year later I was walking through the Hinckley yard in Portsmouth RI and saw two Oyster masts being assembled after painting. What furler did Oyster have on the boats? Reckmann of course but there was a critical difference...the swivels of both Reckmann furlers had been modified with welded stainless tabs to prevent their unscrewing themselves!

Guess it is something others have experienced too...
I am no longer so impressed with Reckmann as I once was!